System for automatically stopping cars or trains.



PATENTBD MAR. 24, 1908. E. B. KLEI-NSGHMIDT. SYSTEM FOR AUTOMATICALLY STOPPING CARS 0R TRAINS.

APPLIOATION FILED FEB. 8, 1906.

WITNESSES: I INVENTOR 5 VL G W 6. MM

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EDWARD E. KLEINSCHLIIDT, OF NEW NEW roan, N. Y., ASSIGNOR TO sconce M. SEELEY, or

YORK, N. Y.

SYSTEM FOR AUTOMATICALLY STOPPING CARS QB TRAINS.

Specification of Lettera Patent.

Patented March 24, 1908.

Application filed February 8, 1906. Serial No. 300,088.

To all whom it may concern:

Be it known that I, EDWARD E. KLEIN- sonmn'r, a citizen of the United States, and a resident of the borough of Manhattan, city,

: county, and State of New York, have inventrails in proximity to a signal, said magnet being referred to hereinafter as the track magnet, and a coil supported preferably from the under side of a car or engine so as to be carried in proximity to the track magnet. The track magnet is included in a circuit controlled mechanically by the operation of the signal mechanism in such manner that when the signal 18 set at danger I position said circuit will be closed to thereby nal the coil carried by t magnet and an induced ener ize the track magnet. When so encrgize should the engineer ass the danger sigiie car will cut the magnetic field of force developed by the track current will thereby be set up in said coil. This induced current is utilized which will open the power circuit, or dperate the throttle valve, or actuate the brake setting mechanism, according'to the particular installation to which the system is applied.

The invention will be understood by reference to the accompanying drawings in which- 1 Eigure 1 is a vertical section through a portion of a car showing diagrammatically the application to means for effecting the stopage of the car or train, and the circuits; and Fig. 2 is a view to illustrate the manner of winding the car coil.

Referring to the drawings the numeral 1 designates the floor of a car. The coil in which aninduced current is set up, as hereafter (inscribed is supported in any convenient manner from the under side of the car on which the system is installed, or from the underside of the truck of the traction engine. In either case said coil is sus ended in proximity to and below an axle o the truck. 'As a convenient means of. suspension I show a bracket 2 secured to the floor 1, which the traction.

to set in operation mechanism.

bracket carries aicasing 3 inclosing a coil 4. A softiron core 5is supported "by the" casin 3, and around said core the coil 4 is woun As shown in Fig. 2 said coil is wound'in two sections, the inner section 6 is wound close to the core 5, and the outer section 7 is comparatively larger and separated from the inner section 6. The sections 6 and 7 are connected in series and their terminals lead to the electromagnet 8 of an ordinary form'o'f relay, said relay being adapted to close a circuit to set in operation the mechanism presently to be described.

lnclosed within a casing 9 sup orted upon an iron bar 10 secured to the uni; is an ordinary electro magnet 11, which will be hereafter referred to as the track magnet. The magnet 11 is included in a normally open circuit 12. A rod 13 is connected to a signal mechanism of any of the usual ty es so as to be positively operated thereby through the medium of a bell crank lever 13 when said signal is set both at danger and safety positions. Said rod is also connected to an arm of a switch 14 included in circuit 12. Inthe position shown the signal mechanism which operates rod 13 is assumed to be at safety position at which time the rod 13 maintains said switch open. Should the signal now be set at danger osition the rod 13 will be moved by the signal mechanism to the right to close the switch 14 thus energizing the track magnet 11. The latter is set in proximity to the signal so that should the engineer fail to bring his car or train to a sto within the )rescribed limits, or should he faH to see the danger signal, the train or car will be automatically stop ed as soon as the car lie track magnet 11, in

magnet 4 passes over. b the following manner. The track magnet 11 so long as the signal is will remain energized. at danger position by reason of the closing of its circuit switch 14 thereby developing a magnetic field of force. As the coil 4 outs this magnetic field. an induced current will be set up therein which is utilized to energize the magnet 8 of the relay. When said magnet is thus energized the attraction of the relay armature 15 closes a circuit 16 which includes a solenoid 17. The core 18 of said solenoid has projecting from its outer end a in 18 which normally bears against one end of a lever 19 pivoted on a suitable bracket,

terminal of a cirsaid lever constituting one cuit 20 which includes either or both solenoids 21 and 22. The core 18 is maintained in 1 normal position by a spring 46 inclosed within a cylindrical portion 23 of the solenoid casing. Located in proximity to the outer end of lever 19 is a fixed terminal 24 included in circuit 20. When the solenoid 17 is energized and the core 18 drawn inwardly the terminal lever 19 will be released and the outer end thereof brought into contact with terminal 24 by the action of a spring 25. The outer end of lever 19 carries a carbon contact break 26 of the usual type.

As before stated, the invention may be applied to electric, steam or other modes of traction, so as to effect the stoppage of a car or train by opening the power circuit, or by actuating the brake mechanism, or by actuating the throttle valve. For the purpose of illustration I have shown in Fig. 1 the application of the invention to means for settin the brakes and also for actuating the throttle valve, it being understood that one or both may be employed.

Should the invention be applied to a car or train having an air brake system, then when solenoid 21 is energized. by the closing of circuit 20 the core 28 ofsaid solenoid will be drawn inwardly. Any convenient connection may be made between said core and the valve controlling the train pipe. In Fig. 1 I have shown connected to said core a link 29 adapted to actuate a rod 30 through the me manner above described.

dium of a bell crank lever 31. When solenoid 21 is energized, the rod 30 will be moved to the right and will throw a lever 35 connected thereto upon the rod 35 as a center. Lever 35 when so moved will contact with the stem 36 of valve 37 thereby opening the latter and establishing communication from train pipe 38 to the atmosphere to effect the setting of the brakes in a well known manner. en solenoid 21 is denergized the lever 35 and the connections therefrom to core 28 are restored to normal position by a spring 39.

The present invention may also be utilized to eflect the movement of the throttle valve in the case of steam traction so as to effect the stoppage of a train b 7 connecting the core 32 of solenoid 22 with said valve. This may be conveniently done by a link connection 33 between said core and a lever 40 to the stern of throttle valve 34. These parts are so adjusted that when solenoid 22 is energized the valve will be closed thus shut' ting off the steam supply.

According to a well-known law the amount of current generated in a wire by cutting magnetic lines of force is directly proportional to the number of lines of force out per second multiplied by the number of turns of wire passing through the magnetic field. In order to provide for all conditions of speed of core 5 of coil 4 will become inductively energized and denergized as it passes over the track magnet. This will cause the magnetic lines of force to cut the inner section 6 of said coil thus setting up a current which will energize magnet 8 of the relay. When traveling at a high rate of speed the time will be insufficient for the track magnet to appreciably energize the core 5 of the coil 4 but the radi ating lines of force of the track magnet 11 under such condition will be cut by section 7' of coil 4 thus setting up a current in said section, which, as will be readily understood, will be of greater intensity the greater the rate of speed at which the coil 4 passes over the track magnet. The coil 4 is so suspended as to come within the effective magnetic field of force of the track magnet.

In order to insure the closing of circuit 20 a sufficient length of time to effect the positive.operation of the cores of solenoids 21 and 22 I have constructed the solenoid 17 in such manner as to retard for a given period the return movement of core 18 to normal position. As soon as coil 4 passes out of the. field of the track magnet the solenoid 17 will be deenergized by the breaking of its circuit through the return vmovement of armature lever 15 of the relay, and if the core 18 of solenoid 17 should be permitted to instantly resume its-normal position then circuit 20 which controls solenoids 21 and 22 would also be broken, the im ulse perhaps being insufficient to effectivefy energize said solenoids. The return movement of core 18 is, therefore, retarded so as to permit terminals 19 and 24 to remain'in contact with each other a definite time. To effect this I have shown the core 18 as provided with a stem 42 to which is fixed any ordinary form of cup gas- 105 ket 43. When the core 18 is drawn inwardly the gasket 43 collapses thus permitting the air within cylinder 23 below said gasket to escape around the edge thereof to the outer air through a slot 44 cut through the core 18. 110 When the solenoid 17 is denergized and the core 18 free to resume its normal position, the gasket 43 will be distended against the wall of cylinder 16 thereby preventing the admission of airfrom the upper side thereof to 115 said cy inder, air at such time passing into the cylinder only through a vent 45 in the end wall thereof, the size of said vent being controlled by a valve if desired. The tension of spring 46, the weight of core 18, and 120 the size of vent 45 are so proportioned rela: tive to each other that a definite time is required for the admission of sufficient air through said vent to balance the atmospheric pressure on the upper side of gasket 43. Thus 125 the force of spring 46 is gradually expended in restoring the core 18 to its normal position,

travel I have constructed the coil 4 in the When the car or I train is traveling at a slow rate of speed the and terminals 19 and 24 will be held in contact with each other for the desired length of time. This construction of the solenoid 17 close said circuit, means signal, means actuated by some i is substantially the same as that described in my application Serial No.'293,856, filed December 29, 1905.

What I claim and desire to secure by Letters Patent is: i

1. A system of the character described comprising a track electromagnet, a signal, a normally open circuit for said magnet, means for closing said circuit and maintain ing it closed when the signal is set-at danger, a coil carried by the car or train wherein an induced current is set up by the passage thereof over said magnet when the latter isenergized, said coil comprising inner and outer separated sections and means controlled by said induced current to effect the stoppage of the car or train. i

2. A system of the character described comprising-a track electromagnet, means to energize said magnet, a coil carried by the car or train wherein an induced current is set uplby the passage thereof over said magnet W en the latter is energized, said coil consisting of inner and outer separated sections, and means controlled by said induced current to effect the stoppage of the car or train.

3. A system of the character described comprising a track electromagnet, meansto energize said magnet, a coil carried by the car or train wherein an induced current is set up by the passage thereof over' said magnet when the latter is energized, a solenoid and a normally open controlling circuit forthe same, a core for said solenoid, means controlled by said induced current tel actuated by the movement of said core when the solenoid is energized to .efiect the stoppage of the car or train, and means to retard. the return movement of said core.

1. A system of the character described comprising a track electromagnct,,a signal, a normall 1 open circuit for said magnet, means for closing said circuit and maintaining it closed when the signal is set at danger, a coil carried by the car or train wherein an induced current is set-up by the passage thereof over said magnet when the latteris energized, said coil comprising inner and outer separated sections, a brake mechanism, and means controlled by said induced current to actuate said brake mechanism to effect the stoppage of the car or train.

5. A system of the character described comprising a track electromagnet, a normally open controlling circuit for said magnet, a

the signal niechl 6. A system of the character described comprising a track electromagnet, a normally open controlling circuit for said magnet, -a signal, means actuated by the signal'mechanism to close said circuit when the set at danger, a coil carried by the car or train wherein an induced current'is set up by the passage thereof over said magnet, said coil consisting of inner and outer separate sections, and-means controlled by said induced current car or train.

7. A system of the character described comprising a track electromagnet, a normally 0 en' controlling signal, means actuated by the signal mechanism to close said circuit and maintain it closed when the signal is set at danger, a coil carried by the car or train wherein an in-- to effect the stoppage of the duced current is set up by the passage thereof 35 over said magnet, a solenoid and a normally}, open circuit therefor, means controlled by, said induced current to close said circuit,

vmechanism connected to the core of said solenoid adapted to effect the sto page of the car or train w on said solenoi 1s energized, and means to retard the return movement of said core.

I 8. In a system. of the character described mechanism carried by a car the stoppage of the same, means for setting said mechanism in operation, a normally open controlling circuit for said means, a track electromagnet and means to energize the same,

wherein an induced current is set up by the passa e thereof over said magnet when the latter 's energized, and means controlled by said induced current to close said circuit and maintain it clds'ed for a predetermined time when the car or train is to be stopped.

9. Inc system offthe character described a solenoid and a controlling circuit therefor,

a core for said solenpid, means connected to and actuated by said core to effect the stop,

magnet when the latter is energized, and

means controlled by said induced current to close said solenoid circuit and to maintain it closed for a predetermined time when the car or train is to be stopped.

10. In a system-of the character described a solenoid and a normally open controlling circuit for the same, a core for said solenoid, means connected to and actuated by the movement of said core when the solenoid is energized to effect trainfand means to maintain said solenoid energized for a predetermined time.

11. In a system of the character described mechanism carried by a car or train to effect the stoppage of the same, a

signal is 70 circuit for said magnet, a 80 or train to effect 95 a corlcarried by the car or train 100 the stoppage of the car or controlling circuit for said mechanism, a solenoid and a, core In testimony whereof I have hereunto therefor, means connected to and actuated signed my name in the presence of two sub- 10 by the movement of said core to open and scribing itnesses,

close said circuit, and means to retard the s 7 1 return movement of said core when the EDWARD 'KLEIBSCHMIDT' solenoid is denergized to prevent the break- Witnesses:

ing of said controlling circuit for a prede- OLIN A. FOSTER,

termined time. GEO. W. YOUNG. 

